Wednesday, April 8, in cooperation with the Keck Center and the Arms Control Association, the Athenaeum hosts the Scoville Lecture to be presented by David L. Aaron. A former Foreign Service officer, Mr. Aaron served on the SALT I delegation during the first Nixon administration. After working on the Senate Intelligence Committee, he held the post of deputy national security adviser on President Carter's National Security Council, and acted as the U.S. arms control specialist at the Carter-Brezhnev summit. A reception for Mr. Aaron begins at 5:30 p.m., followed by dinner at 6:00 p.m. The lecture is at 7:00 p.m.